GDDR is really a requirement when it comes to graphics chipsets when you want to max out fill rate, etc. Now consider that this sports a unified memory archite

GDDR is really a requirement when it comes to graphics chipsets when you want to max out fill rate, etc. Now consider that this sports a unified memory architecture for the CPU and GPU. Armchair programmer speculation: The latency of GDDR5 matters less when you don't have to transfer data back and forth between system memory and GPU memory. In fact, effective latency should be less all things considered compared to a traditional PC architecture. This might also prove useful as a reference: http://solidlystated.com/hardware/difference-between-gddr-and-ddr/ http://solidlystated.com/hardware/difference-between-gddr-an...